Google's 2005 analysis of values used in over a billion web pages reveal
@rel/@rev and @name reserved words that we don't support in RDFa:
http://code.google.com/webstats/2005-12/linkrels.html
Items on the @rel/@rev list that we don't support include:
shortcut, nofollow, made, search, top, author, edituri, file-list, and
service.post
We also don't support the following legacy @name values:
keywords, description, robots, generator, author, revisit-after,
copyright, progid, distribution, language
The complete analysis can be found here:
http://code.google.com/webstats/index.html
The study also states that the difference between @rel/@rev is probably
lost on many web authors... granted, there has never really been a
reason for web authors to care if they were using @rel/@rev. People will
start caring about the difference between @rel/@rev when they start
using RDFa...
-- manu
--
Manu Sporny
President/CEO - Digital Bazaar, Inc.
blog: RDFa Basics in 8 minutes (video)
http://blog.digitalbazaar.com/2008/01/07/rdfa-basics/